NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-26 T21:35:32 PST
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You have selected the following parameters to search on:

Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

NED results for object NGC 2956


1 objects found in NED.    

SOURCE LIST

 Row          Object Name                 EquJ2000.0       Object  Velocity/Redshift    Mag./  Separ.               Number of                                 Row 
 No.     (* => Essential Note)       RA               DEC  Type     km/s       z   Qual Filter arcmin Refs Notes Phot Posn Vel/z Diam Assoc Images   Spectra  No. 
1    NGC 2956                       09h39m17.0s -19d06m04s G        9638  0.032149      15.23    ...    21     2   43   10     3   16     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 2956

INDEX for NGC 2956
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):
  • Images
  • 43 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    21 Reference(s)   
    10 Position data point(s)
    3 Redshift data point(s)   
    16 Diameter data point(s)   
    2 Note(s)   
    ESO data    
    RC3 data    

    ESSENTIAL NOTE for NGC 2956 (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for NGC 2956 (Back to INDEX)
    Object Names Type Object Names Type
    NGC 2956G IRAS 09369-1852 IrS
    ESO 565- G 034 G IRAS F09369-1852 IrS
    ESO 093657-1852.5 G AKARI J0939175-190600 IrS
    WISEA J093917.05-190603.8 IrS SGC 093657-1852.5 G
    2MASX J09391706-1906040 IrS ESO-LV 5650340 G
    2MASXi J0939170-190604 IrS PGC 027531 G
    2MASS J09391706-1906039 IrS NVSS J093917-190606 RadioS
    GALEXASC J093917.22-190602.6 UvS    

    COORDINATES for NGC 2956 (Back to INDEX)

    Position Reference:20032MASX.C.......:

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0)  144.236027  -18.874336  09h36m56.64s  -18d52m27.6s  1.25E+00  1.25E+00    0
    Equatorial (J2000.0)  144.821042  -19.101083  09h39m17.05s  -19d06m03.9s  1.25E+00  1.25E+00    0
    Ecliptic   (B1950.0)  153.749207  -31.119322                              1.25E+00  1.25E+00    0
    Ecliptic   (J2000.0)  154.444018  -31.117014                              1.25E+00  1.25E+00    0
    Galactic              252.437410   24.399586                              1.25E+00  1.25E+00    0
    SuperGalactic         127.579766  -50.752601                              1.25E+00  1.25E+00    0
    
    Additional detailed measurements with references are also available by clicking below:
    10 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for NGC 2956 (Back to INDEX)
     N/A 

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 2956 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    Luminosity Class3.0LC II...1991RC3.9.C...0000d
    Galaxy MorphologySB(s)b?SB(s)b?...1991RC3.9.C...0000d
    3 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for NGC 2956 (Back to INDEX)
    Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
    of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
    The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
    the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

    L a n d o l tS D S SU K I R T
    Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
    Aλ [mag]0.3000.2510.1900.1500.1040.2930.2280.1580.1170.0870.0490.0310.0210.011
    Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
    For completeness, we include the original SFD98 values:
    L a n d o l tS D S SU K I R T
    Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
    Aλ [mag]0.3790.3010.2310.1870.1350.3600.2650.1920.1460.1030.0630.0400.0260.011


    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.120 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 2956 (Back to INDEX)
    Helio. Radial Velocity     :      9638 +/-       40 km/s      
    Redshift                   :  0.032149 +/- 0.000133        1995ApJS..100...69F
    Major Diameter (arcmin)    :   0.9
    Minor Diameter (arcmin)    :   0.3
    Magnitude and Filter       : 15.23
    Classifications            : (R'_1)SB(rs)a       
    
    NOTE: This information is indicative only. With the exception of the
          redshift they are unreferenced and highly inhomogeneous as to
          their origin. The Radial Velocity (when available) is computed
          from the listed redshift. The remaining values are designed to
          orient the user with a quick-look, overall assessment of the
          general properties of the object in question. They are not
          averages nor are they standardized in any way.
    Additional detailed measurements with references are also available by clicking below:
    3 Redshift data point(s)      43 photometric data point(s)      16 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for NGC 2956 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :    9638 +/-     40 km/s      1995ApJS..100...69F
    V (Kinematic LSR)          :    9625 +/-     40 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :    9437 +/-     41 km/s      1991RC3.9.C...0000d
    V (Local Group)            :    9360 +/-     43 km/s      1996AJ....111..794K
    V (3K CMB)                 :    9973 +/-     46 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :    9503 +/-     44 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :    9950 +/-     54 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :   10018 +/-     54 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :   129.3 +/-    9.1 Mpc      (m-M) = 35.56 +/- 0.15 mag
    D (Local Group)            :   128.2 +/-    9.0 Mpc      (m-M) = 35.54 +/- 0.15 mag
    D (3K CMB)                 :   136.6 +/-    9.6 Mpc      (m-M) = 35.68 +/- 0.15 mag
    D (Virgo Infall only)      :   130.2 +/-    9.1 Mpc      (m-M) = 35.57 +/- 0.15 mag
    D (Virgo + GA only)        :   136.3 +/-    9.6 Mpc      (m-M) = 35.67 +/- 0.15 mag
    D (Virgo + GA + Shapley)   :   137.2 +/-    9.6 Mpc      (m-M) = 35.69 +/- 0.15 mag
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :     627 pc/arcsec =  0.627 kpc/arcsec =  37.60 kpc/arcmin =   2.26 Mpc/degree
    Scale (Local Group)        :     622 pc/arcsec =  0.622 kpc/arcsec =  37.30 kpc/arcmin =   2.24 Mpc/degree
    Scale (3K CMB)             :     662 pc/arcsec =  0.662 kpc/arcsec =  39.74 kpc/arcmin =   2.38 Mpc/degree
    Scale (Virgo Infall only)  :     631 pc/arcsec =  0.631 kpc/arcsec =  37.87 kpc/arcmin =   2.27 Mpc/degree
    Scale (Virgo + GA only)    :     661 pc/arcsec =  0.661 kpc/arcsec =  39.65 kpc/arcmin =   2.38 Mpc/degree
    Scale(Virgo + GA + Shapley):     665 pc/arcsec =  0.665 kpc/arcsec =  39.92 kpc/arcmin =   2.40 Mpc/degree
    
    
    To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
    Search for Objects within +/-arcmin where 100 kpc = 2.505 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 9638 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.033265 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 140 Mpc (m-M) = 35.73 mag Angular-Size Distance : 131 Mpc (m-M) = 35.59 mag Co-Moving Radial Distance : 136 Mpc (m-M) = 35.66 mag Co-Moving Tangential Dist. : 136 Mpc (m-M) = 35.66 mag Co-Moving Volume : 0.0105 Gpc^3 Light Travel-Time : 0.435 Gyr Age at Redshift 0.033265 : 12.864 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 637 pc/arcsec = 0.637 kpc/arcsec = 38.20 kpc/arcmin = 2.29 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.87731; Magnitude per Unit Area = 0.1421 mag
    To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
    HoΩmatterΩvacuum     
    Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

    QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 2956 (Back to INDEX)
     N/A 

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 2956 (Back to INDEX)

    The largest diameters in the Visual and Near-Infrared spectral regions, when available:

    Passband Apparent Major Axis
    (2a) [arcsec]
    Apparent Minor Axis
    (2b) [arcsec]
    PA
    [degrees]
    (J2000.0)
    Reference Level RefcodePhysical Major Axis
    (2a) [kpc]
    Physical Minor Axis
    (2b) [kpc]
    ESO-LV "Quick Blue" IIa-O 77.6227.9455 27.0 B-mag arcsec^-2^ 1989ESOLV.C...0000L51.6418.59
    K_s (2MASS "total") 53.2028.7365 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:35.3919.11
    NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.665 kpc/arcsec.
    The quantities quoted above have not necessarily been corrected for foreground extinction.

    View details for 16 Diameter data point(s) available in NED.

    EXTERNAL ARCHIVES AND SERVICES for NGC 2956 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 2956SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 2956VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    ESO/Uppsala Survey -- ESO 565- G 034 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J09391706-1906040 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J0939170-190604 NASA/IPAC Infrared Science Archive (IRSA)
    IRAS Faint Source Catalog -- IRAS F09369-1852 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    The ESO-LV catalog-- ESO-LV 5650340 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Catalogue of Principal Galaxies -- PGC 027531 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 027531 The Lyon/Meudon Extragalactic Database (LEDA)
    NRAO/VLA Sky Survey (NVSS)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 2956GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 2956NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 09h39m17.0s, -19d06m04s (J2000)Site/Service
    Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
    Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
    Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
    Band(s): Size:
    NASA/IPAC Infrared Science Archive (IRSA)
    Band(s): Size:
    NASA/IPAC Infrared Science Archive (IRSA)
    NASA/IPAC Infrared Science Archive (IRSA)
     Size:    Contours (PS)  JPEG  FITS File 
    NRAO/VLA Sky Survey (NVSS)
    The NRAO Data Archive System

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